Sash window and balance.



No. 891,853. PATENTED JUNE 30, 1908.

J. NERBN.

SASH WINDOW AND BALANCE- APPLIOATION FILED MAY 10, 1907.

4 SHEETS-SHEET 1.

With 2 0666 I n 716 ntor PATENTED JUNE 30, IN. V

D BALA NG'E.

4 sums-suns: z.

I J. NBRB SASH WINDOW AN APPLICATION FILED H In ventar M Wjlnesses I m.891,853. I PATENTED JUNE 30, 1908. JFNEREN. SASH WINDOWAND BALANCE.

APPLICATION FILED MAYIO, 1907.

4 SHEETS-SHEET 3.

In 06 mi 07 No. 891,853. PATBNTED JUNE 30, 1908.

J. NEREN. SASH WINDOW AND B ALANUE.

APPLICATION TILED MAI i0, 1907.

4 SHBETS-SHEET 4.

Mil/leases lnven zar UNITED STATES PATENT OFFICE. JOHN NEREN, OF oREBRo,SWEDEN, ASSIGNOR or ONE-HALF TO RHEDIN, GOLDKU'HL & oo.,

. Y 0F ooTTENBoRG, SWEDEN.

SASH W INDOW AND BALANCE.

Specification of Letters Patent.

Patented June 30, 1908.

. within a pivotally mounted casin connected osition.

by a rope, a rack, or other suita le connection, with the sash in such amanner as to coil or uncoil the spring according as the sash is moved inone or the other direction. For

I adjusting the tension of the spring in such an means referred to hasbeen situated entirely outside the casing so as to occupy a considerablespace.

One object of this invention is to obviate this inconvenience by placingthe whole regulating device within the spring casing.-

In apparatus of this kind a alancing can be said to be obtained if thesprings are able tov retain the sash in any position between the extremelower position and the extreme upper one but, on account of the springsslackening as the sash is raised, the retaining power of the springsgrows less and less as the-sash is raised so that the power is ofteninsuflicient when the sash is near its highest It is true that this canbe reguated by ti htening the springs harder but in such case tiesprings will, on the other hand, offer too great a resistance when thesash approaches its lowermost position. A further object of thisinvention is to overcome this latter drawback.

To the formerend, the invention consists, chiefly, in making thespindle, or a part spindle from turning may also be situated within thespring casing. In this 'case the whole pivoted part of the apparatusmay,-

outwardly, have the form of a cylinder, or a cylindrical disk, of theleast possible dimensions and, furthermore, be so arranged that thecasing of the apparatus can fit tightly to the 'latter,;at both sidesthereof. The a paratus, as a whole, will thus take up only ittle roomand can easily be entered into the narrowest window-frames. On accountof the latter property the a paratus is es ecially preferable to thosehit erto known w ich, on account of the large space required by thesame, cannot be generally used. The latter object is attained byproducing between the movable sash and the stationary frame a frictionadapted to aid the springs in retaining the sash in any position withoutthe said friction forming any obstacle to the free movement of the sashup or down and without any hindering overtension of the springs causinga heavy movement of the sash being required.

The sash is suspended in a known manner in two coiled springs eachplaced at one edge' of the sash, and the said friction is produced bysimply making the one s ring somewhat stronger than the other. inconsequence hereof, the sash is exposed to a torquetending to turn thesash in-a somewhat obli ue position in the frame so that two diagona yopposite corners of the sash are pressed somew at against the frame,thus affording the friction contributing to the retaining of the sash.The turning of the sash in a somewhat oblique position is made possibleby the greater or ess' windage always existing between. the sash and theframe. When the sash is to be moved, the friction can, if

necessary, be easily removed by slightly zontal section on line AB ofFig. 2.

side-wall of the kept in engagementwith the apertures 11 by,

' position of rest.

shows, infull size, a. balance viewed from the side, partly in section.Fig. 3 is a hori- Fi 4 is a horizontal section of a balance. Fig. 5 is asimilar view of the balance showing the parts in other .positions.Figs.- 6 and 7 show details appertaining to the apparatus illustrated inFigs. 4 and 5. Fig. 8 shows a modified form of the apparatus. Fig. 9shows the same apparatus with the parts'in other positions. Fig. 10 is adetail view of the same apparatus showing a section on line GH in Fig.8. Fig. 11 shows the arrangement for sus ending the sash in such amanner as to pro uce the necessary friction between the sash and theframe assisting in balancing the sash. Fig. 12 is a horizontal sectionon line CD' of Fig. 11. Fig. 13 shows, in full size, a balance and anarrangement assisting in retaining the sash in its uppermost position.Fig. 14 shows the lastmentioned arrangement viewed from the edge of thesash. Fig. 15'is a horizontal section on line E-F of Fig. 13.

Referring to the drawings, each sash 1 is.

retained by two balances entered into the frame 2 at each side of thesash. Each balance consists of a box 3, or the like, in which twoopposite sides form bearin s for a spindle 4 having a casing 5 looseymounted thereon. The spring 6- inclosed within the said casing isattached, at one end, to the casing and at the other end to the. spindle4. The casing 5 is outwardly formed as a drum or pulley having woundthereon a line 7 or other flexible connection attached to and carryingthe sash 1. Each sash is thus carried by two lines 7 each placed at oneside of the sash as clearly'seen in Fig. 11. This balance works in sucha manner that the weight of the sash is counterbalanced by the tensionof the spring. By making the spring thin and of a suitable length, thetension imparted thereto can be kept nearly constant, so that the sashcan be retained in any desired Nevertheless, after some use the springslackens and necessitates an adjustment. This adjustment is performed bymeans of the arrangement to be described. Q

In the embodiment illustrated in Figs. 4 to 7 the spindle 4 has, at itsone end, a slot or groove 8v adapted to receive a catch 9, or

the like.

The catch 9 has two clutches 10 fitting 1n corres 'onding a ertures 11in the ox 3. e clutches 10 are a spiral spring 13 located in-a bore inthe spindle 4, by which the latter is secured in position.

In order to turn the s indle and, thereby, regulate the tension of t espring 6, a key 14 (Fig 3) one end of which forms a blunt doghoois-inserted through a hole 12 in the frame 2. This hole is situated inthe prolongation of the spindle 4, so that the end of the key 14'entersinto the slot or groove 8 in the spindle 4. When pressure is exertedupon the key 14,- the catch 9 is released and the spindle becomes free,whereupon the tension of the spring 6 can be increased or decreased atWlll by simply turning the key in one or the other direction. When thekey is withdrawn, the spring 13 presses the clutches 10 into theapertures 11, so that the spindle is again secured in position. y

In order to. avoid the loose catch the somewhat modified arrangementillustrated in frame. When the key is withdrawn, the

spindle is again locked in position by the spiral s ring 13 pressingthe'lu s 15 into correspon ing depressions 16in tie Wall of the box 3.

The friction between the frame and the sash assisting in retaining thelatter is obtained by the following arrangement. As before stated andclearly shown in Fig. 11,

each sash is carried by two springs 6, each' situated in a casing 5. Ofthese two springs, the one is stronger than the other, in consequencewhereof the sash l-is caused to take up an oblique position in the frame2, as shown in Fig. 11, so that the dia onally opposite corners 17 and18 of the sash 1 are somewhat pressed against the inside of the frame 2and, thereby, produce the desired friction, by which the sash, with acomparatively slight cooperationof the spring power, so to say,-carriesitself.

The arrangement co-acting in retaining the sash in its uppermostposition may consist of one or more curved springs 19 situated at one orboth sides of the sash (see Figs. 13

and 14). One end of this spring is attached to the sash 1, while theother end is free to glide thereon by the same being provided with alongitudinal slot 20 (Fig; 14) ada ted to receive a screw 21, or thelike, by w 'ch the spring 19 is kept in contact with the sash.

As easily understood, the spring will be V straightened, if exposed topressure from without, and then retain its curved form, when thepressure ceases. As shown in the drawings, the pulleys 5 projectsomewhat inside the frame 2, so that the lines 7 get totally clear andcan "be wound up between the ed e flanges of the pulleys (see Figs. 13

and 15 These projecting parts of the pulleys will cooperate with thesprings 19 in such a-manner that, when the sash is raised and the s l s19 pass the pulleys 5, the latter straighten the said springs bypressing a spring situated in a cavity same toward the sash so as toallow the latter to pass, whereupon the springs 19 retain their formershape and are supported by the pulleys 5, as s own in Fig, 13. Thesprings 19 will then ca a great part of the Weight of the sash. en thesash is lowcred, the springs are first pressed toward the sash, whenpassing the pulleys. In lieu of the springs 19 elastic hooks or the likemay be employed and in lieu of the pulleys 5 other pro ecting partsadapted to carry the slprings or similar elastic parts may be used. hesprings or elastic arts can also be arrange at the inside 0 the frame 2and the p r0 ections cooperating with the .same be arranged at the sash.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent is g 1. In a sash balance, the combination of aspindle, a coiled sash-balancin spring attached to the said spindle, acatch preventing the. spindle from turning, when the sashbalancingspring is coiled or uncoiled, and a in the spindle andacting to retainthe catc in o erative posi tion, said catch being releasab e by outwardpressure-against the action of the catch-retaming spring forenabling thetension of the sash-balancing s ring to be adjusted, substantially as anfor the purpose set forth. 2. In a sash balance, the combination of aspindle, a coiled sash-balancing spring attached to the said spindle, acatch movably mounted in a slot in the said spindle, and a spiral springsituated in a cavity in the spindle and acting to press the said catchin e agement with a stationary part, substanti y as and for thepurposeset forth.

3. Ina sash-window, the combination of spindles journaled at each sideof the sash,

sash-balancing s rings attached to the said spindles, one 'o -the saidsp' s being stronger than the other, means a apted to prevent the sindles from turning, and springs sltuate in cavities in the spindles andacting to normally keep the said means operative, said means be'releasable by outward pressure, substantially as for the purpose setforth.

4. In a'sash-window, the combination of spindles journaled at each sideof the sash,

sash-balancing springs attached to the said spindles, one of the saidsprin s being stronger than the other, means ad apted to prevent thespindles from turning, springs situated in cavlties in the spindles andacting to normally keep the said means operative, said means beingreleasable 'by outward pressure, and elastically yieldin parts carried'b the sash, at the sides t ereof, said parts eing adapted to cooperatewith proecting parts, situated in the frame, in such a manner that, when.the sash approaches its uppermost position, the yieldmg parts arepressed, by the saidflprojections, toward the sash and are then owed toexpand, after havingpassedthe said projections, so as to bear on thelatter and assist in retaining the sash in its uppermost position,substantially as and for t e purpose set forth.-

5. In a sash-window, the combination of spindles journaled in the frame,pulleys journaled about the said spindles, coiledsprin s attached, attheir .one ends, to the .spin es and, at their other ends, to. the

pulle s, means adapted to prevent the spin es from turning, s ringssituated in cavities in the spindles an acting to normally keep the saidmeans operative, said means being releasable by outward pressure,flexible connections between the pulleys and the sash, and elasticallyyielding parts carried by the sash, at the sides thereo in operativerelation to ,the pulleys so that, when the sash In testimony whereof Ihave signedmy "name to this specification in the presence of twosubscribing witnesses.

JOHN NEREN. Witnesses;

Erma Znrrnnsrnom,

Enrrrr OLssoN approaches its uppermost position, the said y1

